Claman on Call: AT&T Earnings Come Up Short

U.S. stocks ended sharply lower following fatal shootings in Ottowa, Canada, coupled with oil falling to more than a two-year low. Canadian authorities identified the shooter as 32-year-old Michael Zehaf-Bibeau, who is believed to be Canadian born and to have converted to Islam.

Canadian stocks tumbled more than 235 points, or 1.6% on Wednesday -- the largest selloff in 16 months. Back in the U.S., nervous investors sent the VIX Volatility Index higher by nearly 15%.

And AT&T missed analyst estimates on top and bottom, and also came up short on revenue growth projections. On a positive note, the telecom company added two million new wireless subscribers. Shares were trading lower in after-hours action.

Now, looking ahead to tomorrow: We'll continue watching any developing news from Canada and the impact on the markets. Then, weekly jobless claims are out at 8:30 a.m. ET and October manufacturing PMI index is out at 8:58 a.m. ET. Plus, we'll get earnings from Microsoft, Amazon, Pandora, Comcast and Under Armour.

Be sure to check out all of today's interviews on FOXBusiness.com/OnCall and tune into Countdown to the Closing Bell every week day at 3 p.m. ET.